Process of generating gas.



1%.- a14,oo1. I PATBNTED FEB. 2?, 1906.

a. ELLIS. rnoonss or GENERATING (us.

INVENTOR LPPLIUATIOH I'ILBD HAYS, 1905.

MUMW f WITNESSES:

UNITED STATES PATENT OFFICE.

N. Y.. assumes '10 cousus'rion YORK, N. Y., A CORPORATION OF PROCESS OFGENERATING GAS- No. 814,001; Specification of Letters Patent. PatentedFeb. 27, 1906.

Original application filed Harsh 6,1905, Serial No 248,468. Divided andthis applioation illad May 5, 1905. Serial No. 259.037.

To all whom it may concern.-

Be it known that I, CARLETON ELLIS, a citizen of the United States, anda resident of New York cit in the county of New York and State of ewYork, have invented oertain new and useful Improvements in Proc esses ofGenerating Gas, of which the followi isa specification.

y invention relates to process for the manufacture of producer-gas inwhich can hon dioxid in lieu of the commonly-used steamis employed asthe endothermic cooling agent for regulating or depressing thetemperature of the fuel-producing mass.

In United States Patent No. 790 489 of May 23, 1905, I have described amethod for the use of carbon dioxid and air for the purose aforesaidwhich re uires that the carn dioxid or products combustion used in thedraft-current sup lied to the gas-producing appliance be usedalternately in a cooled and heated condition.

The present application is a division of the above-mentioned patent andrelates specifically to the simultaneous use of heated and cooledproducts of combustion or carbon dioxid.

The use of the cooled carbon dioxid offers many advantages in mostinstances; but in some cases, however, hot carbon dioxid ma be used toadvantage. A well-known di culty arising from the use of the latterunless lar e quantities of steam be employed therewit is that theaseproducer temperature is not easily contro led.

The present invention relates particularly to the use of suchhighly-heated products of combustion and in a novel manner of such acharacter thatthe evil effects heretofore experienced from the use ofsuch intensely- ,heated gases are avoided.

My invention consists in the use of not solely hot products ofcombustion, but in the simultaneous use of hot products of combustion inconjunction with cooled products of combustion.

The advantages and employment of cooled products of combustion forgasroducer control have been described in my nited States Patent No. 790,253, and lidolnot ay claim g enel'icall to the method thereinisclosed.

he simu taneous use of heated and cooled products ofcombustioncopstituting'the preseat utility wheneverhot ent invention is of cooledsteam-generator furnace gases an purpose the apparatus s wn in the accom.which my process may be carried into effect. "In the drawing, 1 is agas-producerhaving the gas-outlet 2, feed-hopper 3, and the blasttwyer's4.

is a reverheratory furnace having the grate 6, the hearth 7, and thestack 8. rom the stack of this reverberatory furnace a con: duit 9 leadsto the producer-twyers 4. Interposed in this conduit is shown thefan-blower 10. At 1 1 is shown a steam-boiler having the stack 12 andconnecting-flue '13.

.14 is a conduit extending from the boilerstack to the conduit 9,entering same on the inlet side of the fan.

16 is a steam blower having the steampipe 17 and valve 18. 19 is apassage connectin the furnaces with the twyers 4 throng the steam-blower16.

regulating the flow of the gases and air used in'this process.

My method of operation is as follows} A deep bed of coal is brought to asuitable state of ignition in the as-producer 1, the gas being drawnthrong the outlet and the green fuel being admitted through the hopper3. Stack-gases are drawn through the p pe 9 in regulated amount fromboth thereverbra- Those comin from the reverbertory furnace are in ahigh y-hcated condition, while those coming from the steam-boiler arerelatively cool, as the have been water-codledf by contact wit thewater-tubes of the boiler. These products of combustion mingle in theconduit 9, and to these are added, if found necessary a-regulated amountof air through the air-inlet 15. In case the fan-blower (shown sit-) isused for propcllin the gases into the producer the gate 25 will eclosed, while the gates 20 and 21 will be open. When it is desired touse steam in the gas or when it is found desirable to use only thesteamblowcr for propelling the products of pombus- 2o 21, 22, 23, 24,and 25 are blast-gates for tory furnace 5 and the steam-boiler 11.

v stack-gases are produced in the samelocahty.

panying drawing illustrates a means by' tion-and air into the producer,the gates 20 and 21 ma be closed and the gate 25 may be opened. .hemixture of heated and cooled products of combustion and air and, incertain cases, steam is passed through the producer, where it comes incontact with the i nited carbon contained in a deep bed of 115. Theoxygen of the blast is converted into carbon monoxid, while the carbondioxid contained in the roducer-blast is more or less reduced to car onmonoxid. A portion of the carbon dioxid introduced from external sourcesmay act in such a manner as to create a partial pressure of carbondioxid without the formation of carbon dioxid from the fixed carbon ofthe coal, in which case a considerable economy of fuel is brought about.Through the s litting u of the carbon dioxid introduce in the b ast anendothermic absorption of heat is brought about and the temperature ofthe producer is kept at an effective gasifying-point, which is that atwhich no objectionable amount of soot or clinker forms to clog theroducer and retard the uniform passage of the blast throughout thegas-producing mass of fuel. At ve high temperatures the oxygen shows aso active action over the carbon of the fuel, and the exothermicreaction therefore predominates over the endothermic reaction. Thisresults in overheating the lower part of the f'uehbed. By introducing amixture of hot and'cooled products of combustion this overheatiriiisargely prevented, and the amount of cli or which is formed is notobjectionable.

What I claim is- 1. In the generation of gas in a gas-producer, theprocess which consists in en 1'- ing to the draft-current an endothermicconsisting of mixed and averaged products of combustion from differentsources, whereby the temperature of said endothermicbody may beregulated to any desired'degree.

2. In the generation of gas in a -gasproducer, the process whichconsists in supplying to the'draft-current aszan endothermic body,products of combustion-from a furnace; treating ore and admixingtherewithfurther products of combustion from aboiler-furnace. Signed atNew York city, in the county of New York and State of NewY'ork, this. 3dday of May, A. D. 1905.

CABLE-TON ELLIS. Witnesses:

WARREN E.Dlxo1-r, A. M. Samoa.

